A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if Options: A . &nbspThe sum of the two masses is equal to the total mass of body B . &nbspThe center of gravity of the two masses coincides with that of the body C . &nbspThe sum of mass moment of inertia of the masses about their center of gravity is equal to the mass moment of inertia of the body D . &nbspAll of the above

A rigid body, under the action of external forces, can be replaced by two masses

Question

A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

Options:

A . The sum of the two masses is equal to the total mass of body

B . The center of gravity of the two masses coincides with that of the body

C . The sum of mass moment of inertia of the masses about their center of gravity is equal to the mass moment of inertia of the body

D . All of the above

Answer: Option D

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